The Mafia's Lover || Riren

Levi Ackerman is a Mafia boss of one of the highest ranks of where he lives. He's rude stubborn and a bit of an asshole towards people, except for Eren.
Eren gets treated like royalty, being treated nice and kind by Levi and his friends.

Eren Jeager is a bit shy towards new people and rarely talks in front of people he knows and doesn't know, but he's talkative to Levi.
Eren doesn't mind being treated like a princess, though he rather enjoys it but enjoys it more when it's coming from Levi.

Eren was saved by Levi from rapists and druggies. Though they managed to drug and rape Eren, Levi and some of the -trusty- Mafia got the druggies and rapists killed or put in jail.
Eren agreed to be with Levi at all times and to be his "toy".